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sabd-t-surfa

Technology

PRoDUcT oVeRVIeW

Pipeline

welding and

inspection

Subsa 7 is dvpi ad impmtiadi-d pipi wdi tis t

satisf vvi markt dmad (bt i trms f

tia spifiatis ad vum) ad as t

mt irasi strit pipi fabriati

ds ad pratr spifiatis.

Si 2006, Subsa 7 as pratd a i-us tra tia

autrit fr pipi wdi, nDT ad fid-jit ati i riid

pipis ba. Udrpii tis pisp, Subsa 7 as

rt mad tr imprtat strati ivstmts i appidpipi wdi t dvpmt:

tri it a tia partrsip wit cRc-evas PipiItratia, f t wrds adi dsirs admaufaturrs f autmati wdi sstms fr pipistruti

mmitti t a xtsiv wdi R&D prramm t mtfutur idustr dmads

pi i 2013 f a w, xpadd, gba Pipi WdiDvpmt ctr.

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First deployment of unique By-PassPurge welding system

T Skud prjt ffsr pipa prati fr

Stati ffsr nrwa usi Seven Oceans

prstd t first pprtuit t impmt t

Subsa 7 Aquas B-Pass Pur sstm fr

xuti f t ffsr ti-i wds. Prfrma

f ts ritia wds is mad diffiut b t suk

ad bw ditis witi t pipi wi aus

diffiutis i rati a irt pur atmspr

dd t sur t sudss f t irt wd.

T uiqu dsi fatur f t B-Pass Pur

iuds a fu sad sur t maitai t

itrit f t pur as ttr wit a travt wi aws t drauts t pass tru t

pipi witut disturbi t itra pur as.

T tir sstm is mad uiqu f fu

watr-sub matrias, wi abs t sstm

t b fusd ut mpti, ad its dsi

ad matrias ar suffiit rbust t witstad

t riurs f ffsr pratis. Tis ivativ

sstm siifiat irass t riabiit f

ffsr wdi pratis wit bttr assura

f wd quait ad miima risk f xtdd

vss tim.

The increased demands on pipeline and riser

specifications call for compatible advances in welding

and inspection technology. We have an extensive

ongoing welding Research and Development programmeto enhance fatigue life and improve the quality of

performance across a range of pipeline materials

including conventional carbon steel, corrosion-resistant

alloys and high-strength steel applications. Subsea 7

has specialist capability in developing and delivering

state-of-the-art mechanised welding technology. Our

technology is aimed at giving our clients the assurance

of quality and performance they require at a competitive

cost. Below is an update on some of our current welding

technology programmes.

By-Pass Purge enclosure in place

Welding

research and

development

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Welding advances in fabrication ofmetallurgically clad pipe

last ar saw t sussfu prduti dpmt

f Subsa 7s Pusd gas Mta Ar Wdi

(PgMAW) atst wdi t fr t

fabriati f mtauria ad pip i ur rd

pipi prduti faiit i Vira, nrwa.

A k part f t wdi suti is t us f t

ctrd Mta Trasfr (cMT) prss fr rt

wdi. Tis is a advad gas Mta Ar Wdi

(gMAW) tiqu wi aws t wd rt t b

dpsitd vr pris, ivi d tr f t

rt-basd quait ad prfi. Ts ar sstia

faturs t maitai t rrsi prfrma f tpipi. Assura f rt wd quait is aivd

b itra ispti usi stat-f-t-art amra

ad asr quipmt.

Duri t urs f t fabriati, t asr/

amra ispti rjt rat fr t fia prjt was

ss ta 1.4%. of partiuar siifia was t

Autmatd Utrasi Tsti (AUT) rjti rat

fia ispti prdurs wi was kpt at a

stat w v tru t fabriati ampai

at a tpia v 0.2%. T vra sussfu

mpti f t 2012 ad pip fabriati

ampai is tstamt t t riabiit f t

dvpmt cMT/PgMAW suti.

Welding qualification for reelablehigh-strength steels

Tr is irasi dmad fr pipi istaati, iudi

ScRs, i dpr watr, upd wit a rquirmt fr ir

prati prssurs ad tmpraturs ad t d t

trasprt rrsiv stituts.

Fr su appiatis, t us f i-strt st,

grad X80, ffrs siifiat bfits iudi a rduti i

pipi wit ad savis i matria ad fabriati sts.

R-a ffrs a st-fftiv ffsr istaati mtd

fr i-strt st pip, atu t dat tis as b

imitd t grad X65/70 strt pip.

Subsa 7, i abrati wit Vaur ad Masma

Tubs, as prfrmd a quaifiati prramm fr rab

X80 ipip. I tis prramm, V&M Tubs maufaturd

samss X80 pip f 323.9mm oD x 18mm WT pip

i arda wit DnV oS-F101, suppmtar

P rquirmts.

Subsa 7 dvpd ad quaifid a maisd irt wd

prdur basd t gMAW-cMT/PgMAW wdi

prss. Prdur quaifiati was sussfu prfrmd

i mpia wit DnV oS-F101, iudi maia,

fratur tuss ad sur srvi tsti.

Rab i-strt arb st is sidrd t b a k

abi t fr t xpitati f dpwatr i ad

as rsrvs i t futur.

Welding enhancements in the pipeline High-strength steel weld detail

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www.subsea7.com Subsa 7, 2013. Ifrmati rrt at tim f i t prss.

April2013

Luanda Spoolbases, Angola

Port Isabel Spoolbase, Texas, USA

Ubu Spoolbase, Brazil

Vigra Spoolbase, Norway

Wick Bundle Fabrication Site, UK

Global Pipeline Welding Development Centre

Global Pipeline Welding

Development Centre

MILESTONES

2005 First J-a wdi usi t gMAW prss fr i fatiuprfrma ad st atar risr (ScR) i 10 ad 12idia pip fr exx era Prjt, niria.

2006/7 First r-a ScR sstm fr cvrs Bid Fait, guf fMxi, Prjt. Wdi f t 12km f 7-i dia i wasarrid ut usi a i-us dvpd t-wir gTAWmaisd wdi sstm.

2007 First S-a wdi si ad dua tr gMAW prss fri fatiu prfrma - 18-i dia arb st pip fr BPgratr Puti Prjt, Aa.

2008/9 First az wav ScR sstm fabriatd b Subsa 7 at its Ubuspbas, Brazi, ad istad b r-a fr Ss Bc10Prjt.

2009/10 First ad-id rd fabriati fr Subsa 7, fr BPs SkarvPrjt at Vira. Tis iudd dub-jiti, ad t us f a

amra ad asr ispti f t rt fr t first tim.

2010 First us f t Pasd Arra sstm fr AUT ispti farb st pipis Ttas K5cU Prjt at its Viraspbas.

2010 First us f Ra-Tim Diita Radirap t ApaBaus budd pipi prjt at Wstr fabriati sit.

2011 First us f maisd cd Mta Trasfr rt-wdiprss Daas Trit 10-i dia pipi, t id witpasti pip usi t swaii mtd. Wdik trswr nDTd usi Ra-Tim Diita Radirap.

2011 First us f Ra-Tim Diita Radirap t ctria

esi Prjt - t 2-i pipi sp at Vira spbas.2013 opi f t gba Pipi Wdi Dvpmt ctr.

2013 saw t mpti i gasw, UK, f Subsa 7s w gba PipiWdi Dvpmt ctr, maad b t mpas Pipi Prduti

grup (PPg). Tis w faiit sidrab as ur apait t prvid

adi-d wdi sutis fr t fu ra f pipi fabriati

rquirmts.

T w tr irprats 18 wdi bas ad supprti utti ad

bvi faiitis t prfrm pipi wdi ad tsti fr spbas wdi

ad vss ti-is, as w as simuatis fr ur S-a ad J-a vsss.

T xisti dvpmt tr as b r-fiurd t prvid advad

nDT apabiitis as w as ddiatd R&D faiitis. A majr advata f

t w tr wi b its apabiit t simuat t prduti firi i. Tiswi aw PPg t prfrm raisti pr-prduti wdi trias ad pratr

traii, wi wi faiitat t ffiit trasfr f t t ur fabriati

sits wrdwid.

For further information contact:

eri law, Tia Maar, eric.law@subsea7.com